Eastern gray squirrel, Sciurus carolinensis Rubund Creative Commons Attribution ShareAlike.

Red Squirrel, Sciurus vulgaris Rubund Creative Commons Attribution ShareAlike.

Taxonomy:

Microsciurus alfari (Add)
Microsciurus flaviventer (Add)
Microsciurus mimulus (Add)
Microsciurus santanderensis (Add)

Rheithrosciurus macrotis (Add)

Abert's Squirrel, Sciurus aberti (Add)
Brazilian Squirrel, Sciurus aestuans (Add)
Allen's squirrel, Sciurus alleni (Add)
Caucasian Squirrel, Sciurus anomalus (Add)
Arizona gray squirrel, Sciurus arizonensis (Add)
Mexican Gray Squirrel, Sciurus aureogaster (Add)
Eastern gray squirrel, Sciurus carolinensis

Collie's Squirrel, Sciurus colliaei (Add)
Deppe's Squirrel, Sciurus deppei (Add)
Fiery Squirrel, Sciurus flammifer (Add)
Yellow-throated Squirrel, Sciurus gilvigularis (Add)
Red-tailed Squirrel, Sciurus granatensis (Add)
Western Gray Squirrel, Sciurus griseus (Add)
Bolivian Squirrel, Sciurus ignitus (Add)
Northern Amazon Red Squirrel, Sciurus igniventris (Add)
Japanese Squirrel, Sciurus lis (Add)
Mexican Fox Squirrel, Sciurus nayaritensis (Add)
Fox squirrel, Sciurus niger (Add)
Peters's Squirrel, Sciurus oculatus (Add)
Sciurus olsoni (Add)
Andean squirrel, Sciurus pucheranii (Add)
Junín Red Squirrel, Sciurus pyrrhinus (Add)
Richmond's Squirrel, Sciurus richmondi (Add)
Sanborn's Squirrel, Sciurus sanborni (Add)
Southern Amazon Red Squirrel, Sciurus spadiceus (Add)
Guayaquil Squirrel, Sciurus stramineus (Add)
Variegated Squirrel, Sciurus variegatoides (Add)
Red Squirrel, Sciurus vulgaris

Yucatan Squirrel, Sciurus yucatanensis (Add)

Bangs's Mountain Squirrel, Syntheosciurus brochus (Add)

Tamiasciurus douglasii (Add)
Tamiasciurus hudsonicus (Add)
Tamiasciurus mearnsi (Add)